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Disponibil în 41 limbi" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-41" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">41 limbi</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B9%D8%AF%D8%AF_%D8%AA%D8%B1%D8%AA%D9%8A%D8%A8%D9%8A" title="عدد ترتيبي – arabă" lang="ar" hreflang="ar" data-title="عدد ترتيبي" data-language-autonym="العربية" data-language-local-name="arabă" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/S%C4%B1ra_say%C4%B1" title="Sıra sayı – azeră" lang="az" hreflang="az" data-title="Sıra sayı" data-language-autonym="Azərbaycanca" data-language-local-name="azeră" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Nombre_ordinal" title="Nombre ordinal – catalană" lang="ca" hreflang="ca" data-title="Nombre ordinal" data-language-autonym="Català" data-language-local-name="catalană" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Ordin%C3%A1ln%C3%AD_%C4%8D%C3%ADslo" title="Ordinální číslo – cehă" lang="cs" hreflang="cs" data-title="Ordinální číslo" data-language-autonym="Čeština" data-language-local-name="cehă" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%99%C4%95%D1%80%D0%BA%D0%B5_%D1%85%D0%B8%D1%81%D0%B5%D0%BF%C4%95" title="Йĕрке хисепĕ – ciuvașă" lang="cv" hreflang="cv" data-title="Йĕрке хисепĕ" data-language-autonym="Чӑвашла" data-language-local-name="ciuvașă" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Trefnolyn" title="Trefnolyn – galeză" lang="cy" hreflang="cy" data-title="Trefnolyn" data-language-autonym="Cymraeg" data-language-local-name="galeză" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Ordinaltal" title="Ordinaltal – daneză" lang="da" hreflang="da" data-title="Ordinaltal" data-language-autonym="Dansk" data-language-local-name="daneză" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Ordinalzahl" title="Ordinalzahl – germană" lang="de" hreflang="de" data-title="Ordinalzahl" data-language-autonym="Deutsch" data-language-local-name="germană" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Ordinal_number" title="Ordinal number – engleză" lang="en" hreflang="en" data-title="Ordinal number" data-language-autonym="English" data-language-local-name="engleză" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Ordonombro" title="Ordonombro – esperanto" lang="eo" hreflang="eo" data-title="Ordonombro" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/N%C3%BAmero_ordinal_(teor%C3%ADa_de_conjuntos)" title="Número ordinal (teoría de conjuntos) – spaniolă" lang="es" hreflang="es" data-title="Número ordinal (teoría de conjuntos)" data-language-autonym="Español" data-language-local-name="spaniolă" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Ordinaalarv" title="Ordinaalarv – estonă" lang="et" hreflang="et" data-title="Ordinaalarv" data-language-autonym="Eesti" data-language-local-name="estonă" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Zenbaki_ordinal" title="Zenbaki ordinal – bască" lang="eu" hreflang="eu" data-title="Zenbaki ordinal" data-language-autonym="Euskara" data-language-local-name="bască" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B9%D8%AF%D8%AF_%D8%AA%D8%B1%D8%AA%DB%8C%D8%A8%DB%8C" title="عدد ترتیبی – persană" lang="fa" hreflang="fa" data-title="عدد ترتیبی" data-language-autonym="فارسی" data-language-local-name="persană" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Ordinaali" title="Ordinaali – finlandeză" lang="fi" hreflang="fi" data-title="Ordinaali" data-language-autonym="Suomi" data-language-local-name="finlandeză" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Nombre_ordinal" title="Nombre ordinal – franceză" lang="fr" hreflang="fr" data-title="Nombre ordinal" data-language-autonym="Français" data-language-local-name="franceză" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/N%C3%BAmero_ordinal" title="Número ordinal – galiciană" lang="gl" hreflang="gl" data-title="Número ordinal" data-language-autonym="Galego" data-language-local-name="galiciană" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%A1%D7%A4%D7%A8_%D7%A1%D7%95%D7%93%D7%A8" title="מספר סודר – ebraică" lang="he" hreflang="he" data-title="מספר סודר" data-language-autonym="עברית" data-language-local-name="ebraică" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Rendsz%C3%A1m_(halmazelm%C3%A9let)" title="Rendszám (halmazelmélet) – maghiară" lang="hu" hreflang="hu" data-title="Rendszám (halmazelmélet)" data-language-autonym="Magyar" data-language-local-name="maghiară" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Bilangan_ordinal" title="Bilangan ordinal – indoneziană" lang="id" hreflang="id" data-title="Bilangan ordinal" data-language-autonym="Bahasa Indonesia" data-language-local-name="indoneziană" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Ordinala_nombro" title="Ordinala nombro – ido" lang="io" hreflang="io" data-title="Ordinala nombro" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Ra%C3%B0tala" title="Raðtala – islandeză" lang="is" hreflang="is" data-title="Raðtala" data-language-autonym="Íslenska" data-language-local-name="islandeză" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Numero_ordinale_(teoria_degli_insiemi)" title="Numero ordinale (teoria degli insiemi) – italiană" lang="it" hreflang="it" data-title="Numero ordinale (teoria degli insiemi)" data-language-autonym="Italiano" data-language-local-name="italiană" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E9%A0%86%E5%BA%8F%E6%95%B0" title="順序数 – japoneză" lang="ja" hreflang="ja" data-title="順序数" data-language-autonym="日本語" data-language-local-name="japoneză" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9E%D1%80%D0%B4%D0%B8%D0%BD%D0%B0%D0%BB_%D1%81%D0%B0%D0%BD" title="Ординал сан – kazahă" lang="kk" hreflang="kk" data-title="Ординал сан" data-language-autonym="Қазақша" data-language-local-name="kazahă" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%88%9C%EC%84%9C%EC%88%98" title="순서수 – coreeană" lang="ko" hreflang="ko" data-title="순서수" data-language-autonym="한국어" data-language-local-name="coreeană" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Numer_ordinal" title="Numer ordinal – Lombard" lang="lmo" hreflang="lmo" data-title="Numer ordinal" data-language-autonym="Lombard" data-language-local-name="Lombard" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A0%D0%B5%D0%B4%D0%B5%D0%BD_%D0%B1%D1%80%D0%BE%D1%98" title="Реден број – macedoneană" lang="mk" hreflang="mk" data-title="Реден број" data-language-autonym="Македонски" data-language-local-name="macedoneană" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Nombor_ordinal" title="Nombor ordinal – malaeză" lang="ms" hreflang="ms" data-title="Nombor ordinal" data-language-autonym="Bahasa Melayu" data-language-local-name="malaeză" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Ordinaalgetal" title="Ordinaalgetal – neerlandeză" lang="nl" hreflang="nl" data-title="Ordinaalgetal" data-language-autonym="Nederlands" data-language-local-name="neerlandeză" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Liczby_porz%C4%85dkowe" title="Liczby porządkowe – poloneză" lang="pl" hreflang="pl" data-title="Liczby porządkowe" data-language-autonym="Polski" data-language-local-name="poloneză" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/N%C3%BAmero_ordinal" title="Número ordinal – portugheză" lang="pt" hreflang="pt" data-title="Número ordinal" data-language-autonym="Português" data-language-local-name="portugheză" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D0%BE%D1%80%D1%8F%D0%B4%D0%BA%D0%BE%D0%B2%D0%BE%D0%B5_%D1%87%D0%B8%D1%81%D0%BB%D0%BE" title="Порядковое число – rusă" lang="ru" hreflang="ru" data-title="Порядковое число" data-language-autonym="Русский" data-language-local-name="rusă" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Ordinalno_%C5%A1tevilo" title="Ordinalno število – slovenă" lang="sl" hreflang="sl" data-title="Ordinalno število" data-language-autonym="Slovenščina" data-language-local-name="slovenă" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Ordinaltal" title="Ordinaltal – suedeză" lang="sv" hreflang="sv" data-title="Ordinaltal" data-language-autonym="Svenska" data-language-local-name="suedeză" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%88%E0%B8%B3%E0%B8%99%E0%B8%A7%E0%B8%99%E0%B9%80%E0%B8%8A%E0%B8%B4%E0%B8%87%E0%B8%AD%E0%B8%B1%E0%B8%99%E0%B8%94%E0%B8%B1%E0%B8%9A%E0%B8%97%E0%B8%B5%E0%B9%88" title="จำนวนเชิงอันดับที่ – thailandeză" lang="th" hreflang="th" data-title="จำนวนเชิงอันดับที่" data-language-autonym="ไทย" data-language-local-name="thailandeză" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/S%C4%B1ral_say%C4%B1" title="Sıral sayı – turcă" lang="tr" hreflang="tr" data-title="Sıral sayı" data-language-autonym="Türkçe" data-language-local-name="turcă" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D0%BE%D1%80%D1%8F%D0%B4%D0%BA%D0%BE%D0%B2%D0%B5_%D1%87%D0%B8%D1%81%D0%BB%D0%BE" title="Порядкове число – ucraineană" lang="uk" hreflang="uk" data-title="Порядкове число" data-language-autonym="Українська" data-language-local-name="ucraineană" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%A1%D7%93%D7%A8%D7%93%D7%99%D7%A7%D7%A2_%D7%A6%D7%90%D7%9C" title="סדרדיקע צאל – idiș" lang="yi" hreflang="yi" data-title="סדרדיקע צאל" data-language-autonym="ייִדיש" data-language-local-name="idiș" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%BA%8F%E6%95%B0" title="序数 – chineză" lang="zh" hreflang="zh" data-title="序数" data-language-autonym="中文" data-language-local-name="chineză" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E5%BA%8F%E6%95%B8" title="序數 – Literary Chinese" lang="lzh" hreflang="lzh" data-title="序數" data-language-autonym="文言" data-language-local-name="Literary Chinese" class="interlanguage-link-target"><span>文言</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q191780#sitelinks-wikipedia" title="Modifică legăturile interlinguale" class="wbc-editpage">Modifică legăturile</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Spații de nume"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Num%C4%83r_ordinal" title="Vedeți conținutul paginii [a]" accesskey="a"><span>Articol</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Discu%C8%9Bie:Num%C4%83r_ordinal" rel="discussion" title="Discuții despre această pagină [t]" accesskey="t"><span>Discuție</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" 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class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Aspect</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mută în bara laterală</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">ascunde</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">De la Wikipedia, enciclopedia liberă</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="ro" dir="ltr"><p>În <a href="/wiki/Teoria_mul%C8%9Bimilor" title="Teoria mulțimilor">teoria mulțimilor</a>, un <b>număr ordinal</b>, sau simplu <b>ordinal</b>, este un obiect care caracterizează tipul de ordonare al unei <a href="/wiki/Bun%C4%83_ordonare" title="Bună ordonare">mulțimi bine ordonate</a> oarecare. Ordinalele sunt de obicei identificate cu mulțimile ereditare tranzitive. Ele sunt o extensie a <a href="/wiki/Num%C4%83r_natural" title="Număr natural">numerelor naturale</a> diferite de numerele întregi și de cardinale. Ca și alte tipuri de numere, ordinalele pot fi adăugate, înmulțite și <a href="/wiki/Func%C8%9Bie_exponen%C8%9Bial%C4%83" title="Funcție exponențială">exponențiate</a>. </p> <div class="boilerplate metadata" id="stub"><table cellpadding="0" cellspacing="0"><tbody><tr><td><span typeof="mw:File"><a href="/wiki/Fi%C8%99ier:Nuvola_apps_edu_mathematics-p.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Nuvola_apps_edu_mathematics-p.svg/30px-Nuvola_apps_edu_mathematics-p.svg.png" decoding="async" width="30" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Nuvola_apps_edu_mathematics-p.svg/45px-Nuvola_apps_edu_mathematics-p.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Nuvola_apps_edu_mathematics-p.svg/60px-Nuvola_apps_edu_mathematics-p.svg.png 2x" data-file-width="128" data-file-height="128" /></a></span></td><td><i> Acest articol legat de <a href="/wiki/Matematic%C4%83" title="Matematică">matematică</a> este deocamdată un <a href="/wiki/Wikipedia:Articolul_ciot_perfect" class="mw-redirect" title="Wikipedia:Articolul ciot perfect">ciot</a>. Poți <a href="/wiki/Wikipedia:G%C4%83se%C8%99te_%C8%99i_repar%C4%83_un_ciot" title="Wikipedia:Găsește și repară un ciot">ajuta</a> Wikipedia prin <a class="external text" href="https://ro.wikipedia.org/w/index.php?title=Num%C4%83r_ordinal&action=edit">completarea lui</a>.</i></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Adus de la <a dir="ltr" href="https://ro.wikipedia.org/w/index.php?title=Număr_ordinal&oldid=14725973">https://ro.wikipedia.org/w/index.php?title=Număr_ordinal&oldid=14725973</a></div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Special:Categorii" title="Special:Categorii">Categorie</a>: <ul><li><a href="/wiki/Categorie:Numere" title="Categorie:Numere">Numere</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Categorie ascunsă: <ul><li><a href="/wiki/Categorie:Cioturi_legate_de_matematic%C4%83" title="Categorie:Cioturi legate de matematică">Cioturi legate de matematică</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Ultima editare a paginii a fost efectuată la 30 decembrie 2021, ora 04:24.</li> <li id="footer-info-copyright">Acest text este disponibil sub licența <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.ro">Creative Commons cu atribuire și distribuire în condiții identice</a>; pot exista și clauze suplimentare. 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